Did you make this instructable?

One of the developers may have to look into this if you are still having the problem. An "Error 500 Internal Server Error" is a fairly generic error message and doesn't suggest a specific issue. I'm not having any problems starting a new Instructable, but I also don't have an android tablet to test, so you may have to wait until staff is back in the office. In the mean time, if you are able to, I would suggest using a PC to publish your Instructable.

It looks like you're being redirected to the mobile site to publish the instructable. We currently don't have any sort of mobile upload capacity. If you delete the m from the beginning of the web address, you should be fine.

If your browser keeps trying to forward you, you'll have to disable mobile site forwarding, and that should take care of your problem.

You know, I had a whole bunch of foule language queued up in this...but I guess I save it for next time.

The basic gist. With the default apple mobile browser (Safari), you can't disable mobile browsing. If you download Atomic Web (another mobile browser), you should be able to spoof whatever browser you want.